This Rotary Hammer Adapter with Impact Drill Bits Set converts your wrench into a high-torque hammer drill, using heat-treated alloy steel bits to drill through concrete and brick. The reinforced square-shank converter fits most electric wrenches with a four-slot interface and dual retaining rings, ensuring stable attachment for precise drilling in demanding applications. Built from heat-treated alloy steel, this adapter resists deformation after repeated impact cycles and maintains torque output and durability when working with stone, masonry, and dense building materials. A quick-lock mechanism allows fast switching between wrench and hammer-drill modes, enabling efficient torque transfer for faster hole-making during repairs, installations, and maintenance tasks. This portable conversion set expands tool functionality for drilling into wood, stone, brick, and concrete, making it a compact accessory for construction professionals, DIY users, and routine maintenance. Specifications: Name: Rotary Hammer Adapter with Impact Drill Bits Set Adapter Size: 0.95 in Diameter × 2.52 in Length Drill Bit Sizes: 0.24 in (0.6 cm) 0.32 in (0.8 cm) 0.39 in (1.0 cm) 0.47 in (1.2 cm) Interface: Standard Square-Shank Four-Slot Material: High-Strength Steel Included Accessories: Leather Retaining Rings and Pins Quantity: 1 Set Color: As Shown Package Contents: 1 × Rotary Hammer Adapter Set Note: Color may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm.